Title: Unable to sign up with a custom email domain

Hi AFFiNE Support Team,

I'm trying to create an AFFiNE Cloud account using my personal email address: christophe@lesieur.me.

However, when I attempt to sign up, I receive the following error message:

"Failed to sign in – This email is not available for sign in."

My email address uses a custom domain (.me), and I would like to know whether AFFiNE restricts registrations from certain domains or if this is an unexpected issue.

Is there a reason why my email address is being rejected? Is there anything I can do to resolve this?

I've attached a screenshot of the error message.

Thanks in advance for your help!

Best regards,
Christophe